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Optimizing rapid solvent exchange preparation of multilamellar vesicles

机译:优化多层囊泡的快速溶剂交换制备

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We have enhanced the rapid solvent exchange (RSE) apparatus by adding controls in temperature, evacuation speed and vortex velocity. Following published protocols yielded vesicles of diverse size and lamellarity as detected by differential scanning calorimetry, photon correlation spectroscopy and X-ray experiments. To optimize the net production of multilamellar vesicles (MLVs) we varied in addition to vortex and evacuation speed lipid and organic solvent concentration, as well as composition of the aqueous medium. Reducing vortexing frequencies and speed of degassing were most beneficial for the yield in MLVs. Additionally also high lipid concentrations and organic solvent/buffer ratios supported MLV formation. To explain our findings we hypothesize on the role of microscopic instabilities on the aqueous phase, which may act as molds for vesicle formation. (C) 2014 Elsevier Ireland Ltd. All rights reserved.
机译:通过增加温度,排气速度和涡旋速度的控制,我们增强了快速溶剂交换(RSE)设备。按照差示扫描量热法,光子相关光谱法和X射线实验检测,遵循已发表的方案产生了不同大小和层状的囊泡。为了优化多层囊泡(MLV)的净产量,除了涡流和抽空速度,脂质和有机溶剂的浓度以及水性介质的组成以外,我们还进行了更改。降低涡旋频率和脱气速度最有利于MLV的收率。另外,高脂质浓度和有机溶剂/缓冲液比率也支持MLV的形成。为了解释我们的发现,我们假设水相中的微观不稳定性的作用,这可能会导致囊泡形成。 (C)2014 Elsevier Ireland Ltd.保留所有权利。

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